package com.carl.math;

import java.io.*;
import java.util.Scanner;

public class test {

    //变量、运算符、表达式、输入与输出
    public static void main(String[] args) throws IOException {


//        Scanner scanner = new Scanner(System.in);
//        int i = scanner.nextInt(),j= scanner.nextInt();
//        System.out.println(i+j);


//        double x = 1.5,y=3.2;
//
//        System.out.println(x*y);
//        System.out.println(x+y);
//        System.out.println(x-y);
//        System.out.println(x/y);


//        Scanner scanner = new Scanner(System.in);
//
//        String s = scanner.nextLine();
//
//        System.out.println(s);

//        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
////        String s = bufferedReader.readLine();
////        System.out.println(s);
//        String[] arg = br.readLine().split(" ");
//        int i = Integer.parseInt(arg[0]);
//        int j = Integer.parseInt(arg[1]);
//        System.out.println(i+j);

//        System.out.printf("%05d %.2f\n",3344,123.456);
//        System.out.printf("%-4d-%d-%02d\n",2022,9,9);
//
//        System.out.printf("%.3f",2.222222);

        BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(System.out));
        bufferedWriter.write("hello world");
        bufferedWriter.flush();
    }





}
